Expansion coupling



Oct. '12, 1925. 1 L' 1,603,241 J. C. MCLEAN EXPANSION COUPLING Filed Nov. 25, 1925 I NVENTOR.

" 5. of, varipgs mechani egl Paten te c l d. 12, 1 926 I l JOHN Q I-MeLEALT; OF CLEVELAND; OI-IiOp ExiANsIo COVUHPLINQQM V Y p e e i nve ;rel s ixnfis n; coqplings adaptedto be ngountedin the Wallsf V l mhav n iisismeme ansi011? Q m fiQ h aap orysel n sow connect the-Latterwith thednteribnoi the v e The reis nmei i c i prsi ide k mal tightly fittinglmit 01: shtaghmenbitq .yessel I lw t s aybepe byimer lx zi l ihg a holeof suitelble diameter in the, Wall:

1 Means are also.pibvidedfi herhyih devic el miy e atjiqached tti"eylindiiealand'spheridel' Walls as well aszfl'afc Walls Wiihbpt special? qu pmenfl Th Q QQi QF p ldss i s e ypla e u au em z ssl y firs-Wa self 'sn ufgly against-the. mu, thus provlli ng complishifient ofiheffb regeihg ahd ye lzited' ends, isaigl invention; then, ponsist-s 0f; the. means hereinafter fully described a pl payf;

ticlil-a'rly pbihted 0115 in the laims. he n ex d v r -W ssjend' he io qw n de c p font indeta r ai meshes- 5 1 m ody n afiherisyenfii na h: d it cldsedi-megl s eonstituting, hqweve r, but one si lsaid imixe id a i s=+ Y Fig. "l 'is'a 's ide elevatio al' principle of the i1iVeIit iQn -,mapy;"be

- P1- g'; F e- 2 s r efiib l 'vl w Wau h: he c u l s. F -131 s .;.md e n-sf the devicmEig. ft is an -elevatl on al-yiew 015 Ihehibr 1 h avi lig 2t laterally ezite 1 c l iiig h jl "W boss 2 coih'muniegtingyith the interior "b r 3, t o bei nterm YJ eQd asfac 4fasfishown ingFigy2 qli-jbeing' p110- means. Y v :Th member an r e l erb re:

8. smin 1 1 an la sh u er 9 i h ch is mounted alpir i or stopj lfland .an expand:

s ns ee 1: s l i' pl y sLlh s eye fi es fairly sun-$151} ,in the s;enlarged= bore --8 and;-" 012 .12 adaptedto receivethe pin a-v l 'zfil 10; Hi prevent rotation f ihe; sleeve. The sleeveis slottedes at 13 and the lowerinterior bdrtion i s cqne shapedi. to pro ide; 21 conicalrseal for the expanding bolt 14:. This l ni e n s vided with a plurality OffgIfQOYQSlS form-f 'n cating-with thez iriceri orbore 3. v

face.. Thelwrash Q 1 1 51 v- 9?.; of! i Twill-1 F pl g a embledi aild hed ih t inglthesefslots." The th gsdedc ehd'; bit-h rotation therebeigweeri. 5 [Ehe I sharp "edges? 'o ni oi i nahas s e iuexp d n t e d "l' s-pr ri g'pessagewgy A thrgugh' the 'defviee i com l nu- Wa omlsst n -le d"Qfi m iz1iief formed with a wproj eating shou'lder; 2 0,; as

h .igs; t v-rrsc ive: a up" is s wshe 2 01 1 nh cu ved u f ices I place, eare being rtlienfgt haye the" gropves 1s spaced awa fromfthe'slots" 1's, offthe' I sleeve, the coi i c'll head. of the 1561i fsedl .pehdi gcylinder topexpindflthe let-ten; K'As- :thesleeveexpands, it increases in diameter Welland; squp in the' fliictidfitlicoiltabb:between thebelt heafle and cylinder is suflicieni; to pfeyent relative aldng the grooves ials'cybifiefihto"the sleeve an s w e ent' gwo abiol :O th o place and draws down tightly against the wall surface or the washer. The washers may be cupped so as to fit either spherical or a flat surface or may be shaped to fit a cylindrical or other curved surface without need of making spherically shaped coupling members. I I r I Other modes of applying the principle of my invention may be employed instead of the one explained, change being made-as regards the mechanism herein disclosed, pro- 7 vided the means stated by anyoi the following bolt having mounted through said sleeve and member, a nut mounted on said bolt and adapted to ing-claims or the equivalent of such stated means be employed. l I

I therefore particularly point out and distinctly claim asmy invention 1. In an expansion coupling, thecombination of a hollow member having an enlarged bore at the bottom,an expanding sleeve fitting in said enlarged bore and an expanding bolthaving a grooved'conical head mounted in said sleeve and having its end extending through said member and anut for engage ment with the end of said bolt to draw the latter to expand said sleeve.

2. In an expansion coupling, the combina tion of a hollow member having an enlarged bore at the bott0m, a split expanding sleeve removably mounted in said bore and extend ing outwardly of said member, and an ex panding' bolt having a grooved conical head mounted through said sleeve and member and a nut mounted on said bolt andadapted to draw said bolt into said sleeve to expand the latter. r V

3., In an expansion coupling, the combination of a hollow member having an enlarged bore at the bottom, a-s'plit expanding sleeve removably mounted in said bore and extending outwardly of said member, an expanding bolt, having a grooved conical head mounted through said sleeve and member, a.

nut mounted on said bolt and adapted to I draw said bolt into said sleeve to expand the latter, and engaging means on said sleeve and member to prevent relative rotation therebetween.

V 4'. In an expansion coupling, the combinetion of a hollow member havingan enlarged bore at the bottom, a split expanding sleeve removably mounted in said bore and extending outwardly of said member an'expandgrooved conical head draw said bolt intosaid sleeve to expand the latter, said member being formed at the bottom with a depending annular shoulder, and a cupped washer mounted about said shoulder.

5. In an expansion coupling, the combina tion of a hollow member having a threaded boss for a pipe connection and having an enlarged bore and an annular shoulder at one end, a splitexpanding sleeve removably mounted in said enlarged bore, an expanding bolt having a grooved head adapted to engage in said sleeve and extend through said member, and a nut for said bolt adapted to draw said bolt into said expanding sleeve.

Y 6. In an expansion coupling, the combination of a hollow member having a threaded boss for a pipe connection and having an enlarged bore and an annular shoulder at one end-, a split expanding sleeve removably mounted in said enlarged bore, means on said sleeve and member to prevent relative rotation therebetween, an: expanding bolt having a grooved headadapted to engage in said sleeve and extend through said'member, and a nut for said'bolt adapted to draw said bolt into said expanding sleeve. I p e 1 V 7 In an expansion coupling, the combination of a'hollow member havin a threaded,

boss for a'pipe" connection an having an enlarged bore and an annular shoulder at one en'd,a split expanding sleeve removably mounted in said enlarged bore, an expanding bolt having a grooved-head adapted to engage in saidsleeve, and extend through said member, a nut for said bolt adapted to draw said bolt into said expandingsleeve and a soft .metal washer mounted around said shoulder and of greater thickness than said shoulder to forma seal with the engaged surface. 7 c p 8. In an expansion coupling,'the 'combinai tion of a hollow member having, a threaded boss for a pipe connection and having an I enlarged boreand-an annular shoulder at one end, asplit expanding sleeve removably mounted in saidenl-arged bore, an expanding 'bolt having a grooved head adapted to enga ein said sleeve and extend through said member, a nut for said bolt adapted to draw said bolt into said expanding sleeve,

and a soft metal washer mounted around said shoulder and ofgreater thickness than said shoulder to form aj seal, with i the en.

gaged suriace, said sleeve extending beyond said shoulder a distance greater than the 7 thickness of the wall to which the couplin is attached. I l

9; In an expansionicoupling,thecombina-V splits in said sleeve soas to seal the latter when the bolt is drawn tight.

10. In an expansion coupling, the combination of a hollow member having a bolt fora pipe connection and" having an eni I 'larged boreandan annular shoulder at one end a cupped Washer efrelatively s oftfmetal 1 I end, a Split expanding sleeve removebly mounted about 'saidfshoulderend having mounted in said enlarged bore, an expandits curvature one radius'less than that of ing bolt having a grooved headedapted'to thesurfaee engaged; V

engage in vsaid sleeve and extend through- I Signed byrne this 24th day o f'seipternbe'r;

" JOHN 01. MOLEA said member, a nut for said bolt adapted 00.1925. draw said bolt into said expanding sleeve 

